Directions for Question: The questions consist of two statements each, printed as assertion and reason. While answering these questions you are required to choose any one of the following four responses:
Assertion: The second postulate of special relativity refers to the velocity of light in vacuum. Reason: Cerenkov radiation results when particles move through transparent matter at a speed greater than the speed of light in that medium. T is does not violate the second postulate of special relativity. These questions consist of two statements each, printed as Assertion (A) and Reason (R). While answering these questions you are required to choose any one of the following four responses.A) If both A and R are true, and R is a correct explanation of the A.
B) If both A and R are true, but R is not a correct explanation of the A.
C) If A is true, but R is false.
D) If both A and R are false.
Correct Answer: B
Solution :
The second postulate of special theory of relativity states that no material particle can cross the speed of light in vacuum. Cerenkov radiation occurs when some particles move through a transparent medium such as water with a speed more than the speed of light in the medium. So the existence of Cerenkov radiation tells us that the speed of light in a transparent medium can be crossed by a material particle in some circumstances. But this does not violate the second postulate of special theory of relativity as it deals with the speed in vacuum.
You need to login to perform this action.
You will be redirected in
3 sec
